| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/accessors.h" |
| |
| #include "src/api.h" |
| #include "src/contexts.h" |
| #include "src/deoptimizer.h" |
| #include "src/execution.h" |
| #include "src/factory.h" |
| #include "src/frames-inl.h" |
| #include "src/isolate-inl.h" |
| #include "src/list-inl.h" |
| #include "src/messages.h" |
| #include "src/property-details.h" |
| #include "src/prototype.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| Handle<AccessorInfo> Accessors::MakeAccessor( |
| Isolate* isolate, Handle<Name> name, AccessorNameGetterCallback getter, |
| AccessorNameBooleanSetterCallback setter, PropertyAttributes attributes) { |
| Factory* factory = isolate->factory(); |
| Handle<AccessorInfo> info = factory->NewAccessorInfo(); |
| info->set_property_attributes(attributes); |
| info->set_all_can_read(false); |
| info->set_all_can_write(false); |
| info->set_is_special_data_property(true); |
| info->set_is_sloppy(false); |
| info->set_replace_on_access(false); |
| name = factory->InternalizeName(name); |
| info->set_name(*name); |
| Handle<Object> get = v8::FromCData(isolate, getter); |
| if (setter == nullptr) setter = &ReconfigureToDataProperty; |
| Handle<Object> set = v8::FromCData(isolate, setter); |
| info->set_getter(*get); |
| info->set_setter(*set); |
| Address redirected = info->redirected_getter(); |
| if (redirected != nullptr) { |
| Handle<Object> js_get = v8::FromCData(isolate, redirected); |
| info->set_js_getter(*js_get); |
| } |
| return info; |
| } |
| |
| |
| static V8_INLINE bool CheckForName(Handle<Name> name, |
| Handle<String> property_name, |
| int offset, |
| int* object_offset) { |
| if (Name::Equals(name, property_name)) { |
| *object_offset = offset; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // Returns true for properties that are accessors to object fields. |
| // If true, *object_offset contains offset of object field. |
| bool Accessors::IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name, |
| int* object_offset) { |
| Isolate* isolate = name->GetIsolate(); |
| |
| switch (map->instance_type()) { |
| case JS_ARRAY_TYPE: |
| return |
| CheckForName(name, isolate->factory()->length_string(), |
| JSArray::kLengthOffset, object_offset); |
| default: |
| if (map->instance_type() < FIRST_NONSTRING_TYPE) { |
| return CheckForName(name, isolate->factory()->length_string(), |
| String::kLengthOffset, object_offset); |
| } |
| |
| return false; |
| } |
| } |
| |
| |
| namespace { |
| |
| MUST_USE_RESULT MaybeHandle<Object> ReplaceAccessorWithDataProperty( |
| Isolate* isolate, Handle<Object> receiver, Handle<JSObject> holder, |
| Handle<Name> name, Handle<Object> value) { |
| LookupIterator it(receiver, name, holder, |
| LookupIterator::OWN_SKIP_INTERCEPTOR); |
| // Skip any access checks we might hit. This accessor should never hit in a |
| // situation where the caller does not have access. |
| if (it.state() == LookupIterator::ACCESS_CHECK) { |
| CHECK(it.HasAccess()); |
| it.Next(); |
| } |
| DCHECK(holder.is_identical_to(it.GetHolder<JSObject>())); |
| CHECK_EQ(LookupIterator::ACCESSOR, it.state()); |
| it.ReconfigureDataProperty(value, it.property_attributes()); |
| return value; |
| } |
| |
| } // namespace |
| |
| void Accessors::ReconfigureToDataProperty( |
| v8::Local<v8::Name> key, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> receiver = Utils::OpenHandle(*info.This()); |
| Handle<JSObject> holder = |
| Handle<JSObject>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Name> name = Utils::OpenHandle(*key); |
| Handle<Object> value = Utils::OpenHandle(*val); |
| MaybeHandle<Object> result = |
| ReplaceAccessorWithDataProperty(isolate, receiver, holder, name, value); |
| if (result.is_null()) { |
| isolate->OptionalRescheduleException(false); |
| } else { |
| info.GetReturnValue().Set(true); |
| } |
| } |
| |
| // |
| // Accessors::ArgumentsIterator |
| // |
| |
| |
| void Accessors::ArgumentsIteratorGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* result = isolate->native_context()->array_values_iterator(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<Name> name = isolate->factory()->iterator_symbol(); |
| return MakeAccessor(isolate, name, &ArgumentsIteratorGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ArrayLength |
| // |
| |
| |
| void Accessors::ArrayLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| RuntimeCallTimerScope timer( |
| isolate, &RuntimeCallStats::AccessorNameGetterCallback_ArrayLength); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| JSArray* holder = JSArray::cast(*Utils::OpenHandle(*info.Holder())); |
| Object* result = holder->length(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| void Accessors::ArrayLengthSetter( |
| v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| |
| Handle<JSReceiver> object = Utils::OpenHandle(*info.Holder()); |
| Handle<JSArray> array = Handle<JSArray>::cast(object); |
| Handle<Object> length_obj = Utils::OpenHandle(*val); |
| |
| uint32_t length = 0; |
| if (!JSArray::AnythingToArrayLength(isolate, length_obj, &length)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| JSArray::SetLength(array, length); |
| |
| uint32_t actual_new_len = 0; |
| CHECK(array->length()->ToArrayLength(&actual_new_len)); |
| // Fail if there were non-deletable elements. |
| if (actual_new_len != length) { |
| if (info.ShouldThrowOnError()) { |
| Factory* factory = isolate->factory(); |
| isolate->Throw(*factory->NewTypeError( |
| MessageTemplate::kStrictDeleteProperty, |
| factory->NewNumberFromUint(actual_new_len - 1), array)); |
| isolate->OptionalRescheduleException(false); |
| } else { |
| info.GetReturnValue().Set(false); |
| } |
| } else { |
| info.GetReturnValue().Set(true); |
| } |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ArrayLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->length_string(), |
| &ArrayLengthGetter, |
| &ArrayLengthSetter, |
| attributes); |
| } |
| |
| // |
| // Accessors::ModuleNamespaceEntry |
| // |
| |
| void Accessors::ModuleNamespaceEntryGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| JSModuleNamespace* holder = |
| JSModuleNamespace::cast(*Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result; |
| if (!holder->GetExport(Handle<String>::cast(Utils::OpenHandle(*name))) |
| .ToHandle(&result)) { |
| isolate->OptionalRescheduleException(false); |
| } else { |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| } |
| |
| void Accessors::ModuleNamespaceEntrySetter( |
| v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Factory* factory = isolate->factory(); |
| Handle<JSModuleNamespace> holder = |
| Handle<JSModuleNamespace>::cast(Utils::OpenHandle(*info.Holder())); |
| |
| if (info.ShouldThrowOnError()) { |
| isolate->Throw(*factory->NewTypeError( |
| MessageTemplate::kStrictReadOnlyProperty, Utils::OpenHandle(*name), |
| i::Object::TypeOf(isolate, holder), holder)); |
| isolate->OptionalRescheduleException(false); |
| } else { |
| info.GetReturnValue().Set(false); |
| } |
| } |
| |
| Handle<AccessorInfo> Accessors::ModuleNamespaceEntryInfo( |
| Isolate* isolate, Handle<String> name, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, name, &ModuleNamespaceEntryGetter, |
| &ModuleNamespaceEntrySetter, attributes); |
| } |
| |
| |
| // |
| // Accessors::StringLength |
| // |
| |
| void Accessors::StringLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| RuntimeCallTimerScope timer( |
| isolate, &RuntimeCallStats::AccessorNameGetterCallback_StringLength); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| |
| // We have a slight impedance mismatch between the external API and the way we |
| // use callbacks internally: Externally, callbacks can only be used with |
| // v8::Object, but internally we have callbacks on entities which are higher |
| // in the hierarchy, in this case for String values. |
| |
| Object* value = *Utils::OpenHandle(*v8::Local<v8::Value>(info.This())); |
| if (!value->IsString()) { |
| // Not a string value. That means that we either got a String wrapper or |
| // a Value with a String wrapper in its prototype chain. |
| value = JSValue::cast(*Utils::OpenHandle(*info.Holder()))->value(); |
| } |
| Object* result = Smi::FromInt(String::cast(value)->length()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::StringLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->length_string(), |
| &StringLengthGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptColumnOffset |
| // |
| |
| |
| void Accessors::ScriptColumnOffsetGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* res = Smi::FromInt( |
| Script::cast(JSValue::cast(object)->value())->column_offset()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptColumnOffsetInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("column_offset"))); |
| return MakeAccessor(isolate, name, &ScriptColumnOffsetGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptId |
| // |
| |
| |
| void Accessors::ScriptIdGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* id = Smi::FromInt(Script::cast(JSValue::cast(object)->value())->id()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(id, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptIdInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name( |
| isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("id"))); |
| return MakeAccessor(isolate, name, &ScriptIdGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptName |
| // |
| |
| |
| void Accessors::ScriptNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* source = Script::cast(JSValue::cast(object)->value())->name(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->name_string(), |
| &ScriptNameGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSource |
| // |
| |
| |
| void Accessors::ScriptSourceGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* source = Script::cast(JSValue::cast(object)->value())->source(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->source_string(), |
| &ScriptSourceGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptLineOffset |
| // |
| |
| |
| void Accessors::ScriptLineOffsetGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* res = |
| Smi::FromInt(Script::cast(JSValue::cast(object)->value())->line_offset()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptLineOffsetInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("line_offset"))); |
| return MakeAccessor(isolate, name, &ScriptLineOffsetGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptType |
| // |
| |
| |
| void Accessors::ScriptTypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* res = |
| Smi::FromInt(Script::cast(JSValue::cast(object)->value())->type()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptTypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name( |
| isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("type"))); |
| return MakeAccessor(isolate, name, &ScriptTypeGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptCompilationType |
| // |
| |
| |
| void Accessors::ScriptCompilationTypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* res = Smi::FromInt( |
| Script::cast(JSValue::cast(object)->value())->compilation_type()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptCompilationTypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("compilation_type"))); |
| return MakeAccessor(isolate, name, &ScriptCompilationTypeGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSourceUrl |
| // |
| |
| |
| void Accessors::ScriptSourceUrlGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* url = Script::cast(JSValue::cast(object)->value())->source_url(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceUrlInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->source_url_string(), |
| &ScriptSourceUrlGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSourceMappingUrl |
| // |
| |
| |
| void Accessors::ScriptSourceMappingUrlGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* url = |
| Script::cast(JSValue::cast(object)->value())->source_mapping_url(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceMappingUrlInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->source_mapping_url_string(), |
| &ScriptSourceMappingUrlGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptIsEmbedderDebugScript |
| // |
| |
| |
| void Accessors::ScriptIsEmbedderDebugScriptGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| bool is_embedder_debug_script = Script::cast(JSValue::cast(object)->value()) |
| ->origin_options() |
| .IsEmbedderDebugScript(); |
| Object* res = *isolate->factory()->ToBoolean(is_embedder_debug_script); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptIsEmbedderDebugScriptInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("is_debugger_script"))); |
| return MakeAccessor(isolate, name, &ScriptIsEmbedderDebugScriptGetter, |
| nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetContextData |
| // |
| |
| |
| void Accessors::ScriptContextDataGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.Holder()); |
| Object* res = Script::cast(JSValue::cast(object)->value())->context_data(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptContextDataInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("context_data"))); |
| return MakeAccessor(isolate, name, &ScriptContextDataGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromScript |
| // |
| |
| |
| void Accessors::ScriptEvalFromScriptGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.Holder()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| if (!script->eval_from_shared()->IsUndefined(isolate)) { |
| Handle<SharedFunctionInfo> eval_from_shared( |
| SharedFunctionInfo::cast(script->eval_from_shared())); |
| if (eval_from_shared->script()->IsScript()) { |
| Handle<Script> eval_from_script(Script::cast(eval_from_shared->script())); |
| result = Script::GetWrapper(eval_from_script); |
| } |
| } |
| |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromScriptInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_script"))); |
| return MakeAccessor(isolate, name, &ScriptEvalFromScriptGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromScriptPosition |
| // |
| |
| |
| void Accessors::ScriptEvalFromScriptPositionGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.Holder()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| if (script->compilation_type() == Script::COMPILATION_TYPE_EVAL) { |
| result = Handle<Object>(Smi::FromInt(script->GetEvalPosition()), isolate); |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromScriptPositionInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_script_position"))); |
| return MakeAccessor(isolate, name, &ScriptEvalFromScriptPositionGetter, |
| nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromFunctionName |
| // |
| |
| |
| void Accessors::ScriptEvalFromFunctionNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.Holder()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| if (!script->eval_from_shared()->IsUndefined(isolate)) { |
| Handle<SharedFunctionInfo> shared( |
| SharedFunctionInfo::cast(script->eval_from_shared())); |
| // Find the name of the function calling eval. |
| if (!shared->name()->IsUndefined(isolate)) { |
| result = Handle<Object>(shared->name(), isolate); |
| } else { |
| result = Handle<Object>(shared->inferred_name(), isolate); |
| } |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromFunctionNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_function_name"))); |
| return MakeAccessor(isolate, name, &ScriptEvalFromFunctionNameGetter, nullptr, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionPrototype |
| // |
| |
| static Handle<Object> GetFunctionPrototype(Isolate* isolate, |
| Handle<JSFunction> function) { |
| if (!function->has_prototype()) { |
| Handle<Object> proto = isolate->factory()->NewFunctionPrototype(function); |
| JSFunction::SetPrototype(function, proto); |
| } |
| return Handle<Object>(function->prototype(), isolate); |
| } |
| |
| |
| MUST_USE_RESULT static MaybeHandle<Object> SetFunctionPrototype( |
| Isolate* isolate, Handle<JSFunction> function, Handle<Object> value) { |
| JSFunction::SetPrototype(function, value); |
| DCHECK(function->prototype() == *value); |
| return function; |
| } |
| |
| |
| MaybeHandle<Object> Accessors::FunctionSetPrototype(Handle<JSFunction> function, |
| Handle<Object> prototype) { |
| DCHECK(function->IsConstructor()); |
| Isolate* isolate = function->GetIsolate(); |
| return SetFunctionPrototype(isolate, function, prototype); |
| } |
| |
| |
| void Accessors::FunctionPrototypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| RuntimeCallTimerScope timer( |
| isolate, &RuntimeCallStats::AccessorNameGetterCallback_FunctionPrototype); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result = GetFunctionPrototype(isolate, function); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| void Accessors::FunctionPrototypeSetter( |
| v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> value = Utils::OpenHandle(*val); |
| Handle<JSFunction> object = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| if (SetFunctionPrototype(isolate, object, value).is_null()) { |
| isolate->OptionalRescheduleException(false); |
| } else { |
| info.GetReturnValue().Set(true); |
| } |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionPrototypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->prototype_string(), |
| &FunctionPrototypeGetter, |
| &FunctionPrototypeSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionLength |
| // |
| |
| |
| void Accessors::FunctionLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result; |
| if (!JSFunction::GetLength(isolate, function).ToHandle(&result)) { |
| result = handle(Smi::kZero, isolate); |
| isolate->OptionalRescheduleException(false); |
| } |
| |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| Handle<AccessorInfo> Accessors::FunctionLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->length_string(), |
| &FunctionLengthGetter, &ReconfigureToDataProperty, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionName |
| // |
| |
| |
| void Accessors::FunctionNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result = JSFunction::GetName(isolate, function); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| Handle<AccessorInfo> Accessors::FunctionNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->name_string(), |
| &FunctionNameGetter, &ReconfigureToDataProperty, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionArguments |
| // |
| |
| |
| static Handle<Object> ArgumentsForInlinedFunction( |
| JavaScriptFrame* frame, |
| Handle<JSFunction> inlined_function, |
| int inlined_frame_index) { |
| Isolate* isolate = inlined_function->GetIsolate(); |
| Factory* factory = isolate->factory(); |
| |
| TranslatedState translated_values(frame); |
| translated_values.Prepare(false, frame->fp()); |
| |
| int argument_count = 0; |
| TranslatedFrame* translated_frame = |
| translated_values.GetArgumentsInfoFromJSFrameIndex(inlined_frame_index, |
| &argument_count); |
| TranslatedFrame::iterator iter = translated_frame->begin(); |
| |
| // Skip the function. |
| iter++; |
| |
| // Skip the receiver. |
| iter++; |
| argument_count--; |
| |
| Handle<JSObject> arguments = |
| factory->NewArgumentsObject(inlined_function, argument_count); |
| Handle<FixedArray> array = factory->NewFixedArray(argument_count); |
| bool should_deoptimize = false; |
| for (int i = 0; i < argument_count; ++i) { |
| // If we materialize any object, we should deopt because we might alias |
| // an object that was eliminated by escape analysis. |
| should_deoptimize = should_deoptimize || iter->IsMaterializedObject(); |
| Handle<Object> value = iter->GetValue(); |
| array->set(i, *value); |
| iter++; |
| } |
| arguments->set_elements(*array); |
| |
| if (should_deoptimize) { |
| translated_values.StoreMaterializedValuesAndDeopt(); |
| } |
| |
| // Return the freshly allocated arguments object. |
| return arguments; |
| } |
| |
| |
| static int FindFunctionInFrame(JavaScriptFrame* frame, |
| Handle<JSFunction> function) { |
| DisallowHeapAllocation no_allocation; |
| List<JSFunction*> functions(2); |
| frame->GetFunctions(&functions); |
| for (int i = functions.length() - 1; i >= 0; i--) { |
| if (functions[i] == *function) return i; |
| } |
| return -1; |
| } |
| |
| |
| namespace { |
| |
| Handle<Object> GetFunctionArguments(Isolate* isolate, |
| Handle<JSFunction> function) { |
| // Find the top invocation of the function by traversing frames. |
| for (JavaScriptFrameIterator it(isolate); !it.done(); it.Advance()) { |
| JavaScriptFrame* frame = it.frame(); |
| int function_index = FindFunctionInFrame(frame, function); |
| if (function_index < 0) continue; |
| |
| if (function_index > 0) { |
| // The function in question was inlined. Inlined functions have the |
| // correct number of arguments and no allocated arguments object, so |
| // we can construct a fresh one by interpreting the function's |
| // deoptimization input data. |
| return ArgumentsForInlinedFunction(frame, function, function_index); |
| } |
| |
| // Find the frame that holds the actual arguments passed to the function. |
| it.AdvanceToArgumentsFrame(); |
| frame = it.frame(); |
| |
| // Get the number of arguments and construct an arguments object |
| // mirror for the right frame. |
| const int length = frame->ComputeParametersCount(); |
| Handle<JSObject> arguments = isolate->factory()->NewArgumentsObject( |
| function, length); |
| Handle<FixedArray> array = isolate->factory()->NewFixedArray(length); |
| |
| // Copy the parameters to the arguments object. |
| DCHECK(array->length() == length); |
| for (int i = 0; i < length; i++) { |
| Object* value = frame->GetParameter(i); |
| if (value->IsTheHole(isolate)) { |
| // Generators currently use holes as dummy arguments when resuming. We |
| // must not leak those. |
| DCHECK(IsResumableFunction(function->shared()->kind())); |
| value = isolate->heap()->undefined_value(); |
| } |
| array->set(i, value); |
| } |
| arguments->set_elements(*array); |
| |
| // Return the freshly allocated arguments object. |
| return arguments; |
| } |
| |
| // No frame corresponding to the given function found. Return null. |
| return isolate->factory()->null_value(); |
| } |
| |
| } // namespace |
| |
| |
| Handle<JSObject> Accessors::FunctionGetArguments(Handle<JSFunction> function) { |
| Handle<Object> arguments = |
| GetFunctionArguments(function->GetIsolate(), function); |
| CHECK(arguments->IsJSObject()); |
| return Handle<JSObject>::cast(arguments); |
| } |
| |
| |
| void Accessors::FunctionArgumentsGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result = |
| function->shared()->native() |
| ? Handle<Object>::cast(isolate->factory()->null_value()) |
| : GetFunctionArguments(isolate, function); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionArgumentsInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->arguments_string(), |
| &FunctionArgumentsGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionCaller |
| // |
| |
| |
| static inline bool AllowAccessToFunction(Context* current_context, |
| JSFunction* function) { |
| return current_context->HasSameSecurityTokenAs(function->context()); |
| } |
| |
| |
| class FrameFunctionIterator { |
| public: |
| FrameFunctionIterator(Isolate* isolate, const DisallowHeapAllocation& promise) |
| : isolate_(isolate), |
| frame_iterator_(isolate), |
| functions_(2), |
| index_(0) { |
| GetFunctions(); |
| } |
| JSFunction* next() { |
| while (true) { |
| if (functions_.length() == 0) return NULL; |
| JSFunction* next_function = functions_[index_]; |
| index_--; |
| if (index_ < 0) { |
| GetFunctions(); |
| } |
| // Skip functions from other origins. |
| if (!AllowAccessToFunction(isolate_->context(), next_function)) continue; |
| return next_function; |
| } |
| } |
| |
| // Iterate through functions until the first occurence of 'function'. |
| // Returns true if 'function' is found, and false if the iterator ends |
| // without finding it. |
| bool Find(JSFunction* function) { |
| JSFunction* next_function; |
| do { |
| next_function = next(); |
| if (next_function == function) return true; |
| } while (next_function != NULL); |
| return false; |
| } |
| |
| private: |
| void GetFunctions() { |
| functions_.Rewind(0); |
| if (frame_iterator_.done()) return; |
| JavaScriptFrame* frame = frame_iterator_.frame(); |
| frame->GetFunctions(&functions_); |
| DCHECK(functions_.length() > 0); |
| frame_iterator_.Advance(); |
| index_ = functions_.length() - 1; |
| } |
| Isolate* isolate_; |
| JavaScriptFrameIterator frame_iterator_; |
| List<JSFunction*> functions_; |
| int index_; |
| }; |
| |
| |
| MaybeHandle<JSFunction> FindCaller(Isolate* isolate, |
| Handle<JSFunction> function) { |
| DisallowHeapAllocation no_allocation; |
| FrameFunctionIterator it(isolate, no_allocation); |
| if (function->shared()->native()) { |
| return MaybeHandle<JSFunction>(); |
| } |
| // Find the function from the frames. |
| if (!it.Find(*function)) { |
| // No frame corresponding to the given function found. Return null. |
| return MaybeHandle<JSFunction>(); |
| } |
| // Find previously called non-toplevel function. |
| JSFunction* caller; |
| do { |
| caller = it.next(); |
| if (caller == NULL) return MaybeHandle<JSFunction>(); |
| } while (caller->shared()->is_toplevel()); |
| |
| // If caller is a built-in function and caller's caller is also built-in, |
| // use that instead. |
| JSFunction* potential_caller = caller; |
| while (potential_caller != NULL && potential_caller->shared()->IsBuiltin()) { |
| caller = potential_caller; |
| potential_caller = it.next(); |
| } |
| if (!caller->shared()->native() && potential_caller != NULL) { |
| caller = potential_caller; |
| } |
| // Censor if the caller is not a sloppy mode function. |
| // Change from ES5, which used to throw, see: |
| // https://bugs.ecmascript.org/show_bug.cgi?id=310 |
| if (is_strict(caller->shared()->language_mode())) { |
| return MaybeHandle<JSFunction>(); |
| } |
| // Don't return caller from another security context. |
| if (!AllowAccessToFunction(isolate->context(), caller)) { |
| return MaybeHandle<JSFunction>(); |
| } |
| return Handle<JSFunction>(caller); |
| } |
| |
| |
| void Accessors::FunctionCallerGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result; |
| MaybeHandle<JSFunction> maybe_caller; |
| maybe_caller = FindCaller(isolate, function); |
| Handle<JSFunction> caller; |
| if (maybe_caller.ToHandle(&caller)) { |
| result = caller; |
| } else { |
| result = isolate->factory()->null_value(); |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionCallerInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->caller_string(), |
| &FunctionCallerGetter, nullptr, attributes); |
| } |
| |
| |
| // |
| // Accessors::BoundFunctionLength |
| // |
| |
| void Accessors::BoundFunctionLengthGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| RuntimeCallTimerScope timer( |
| isolate, |
| &RuntimeCallStats::AccessorNameGetterCallback_BoundFunctionLength); |
| HandleScope scope(isolate); |
| Handle<JSBoundFunction> function = |
| Handle<JSBoundFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| |
| Handle<Smi> target_length; |
| Handle<JSFunction> target(JSFunction::cast(function->bound_target_function()), |
| isolate); |
| if (!JSFunction::GetLength(isolate, target).ToHandle(&target_length)) { |
| target_length = handle(Smi::kZero, isolate); |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| int bound_length = function->bound_arguments()->length(); |
| int length = Max(0, target_length->value() - bound_length); |
| |
| Handle<Object> result(Smi::FromInt(length), isolate); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| Handle<AccessorInfo> Accessors::BoundFunctionLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->length_string(), |
| &BoundFunctionLengthGetter, &ReconfigureToDataProperty, |
| attributes); |
| } |
| |
| // |
| // Accessors::BoundFunctionName |
| // |
| |
| void Accessors::BoundFunctionNameGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| RuntimeCallTimerScope timer( |
| isolate, &RuntimeCallStats::AccessorNameGetterCallback_BoundFunctionName); |
| HandleScope scope(isolate); |
| Handle<JSBoundFunction> function = |
| Handle<JSBoundFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result; |
| if (!JSBoundFunction::GetName(isolate, function).ToHandle(&result)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| Handle<AccessorInfo> Accessors::BoundFunctionNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, isolate->factory()->name_string(), |
| &BoundFunctionNameGetter, &ReconfigureToDataProperty, |
| attributes); |
| } |
| |
| // |
| // Accessors::ErrorStack |
| // |
| |
| namespace { |
| |
| MaybeHandle<JSReceiver> ClearInternalStackTrace(Isolate* isolate, |
| Handle<JSObject> error) { |
| RETURN_ON_EXCEPTION( |
| isolate, |
| JSReceiver::SetProperty(error, isolate->factory()->stack_trace_symbol(), |
| isolate->factory()->undefined_value(), STRICT), |
| JSReceiver); |
| return error; |
| } |
| |
| bool IsAccessor(Handle<Object> receiver, Handle<Name> name, |
| Handle<JSObject> holder) { |
| LookupIterator it(receiver, name, holder, |
| LookupIterator::OWN_SKIP_INTERCEPTOR); |
| // Skip any access checks we might hit. This accessor should never hit in a |
| // situation where the caller does not have access. |
| if (it.state() == LookupIterator::ACCESS_CHECK) { |
| CHECK(it.HasAccess()); |
| it.Next(); |
| } |
| return (it.state() == LookupIterator::ACCESSOR); |
| } |
| |
| } // namespace |
| |
| void Accessors::ErrorStackGetter( |
| v8::Local<v8::Name> key, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSObject> holder = |
| Handle<JSObject>::cast(Utils::OpenHandle(*info.Holder())); |
| |
| // Retrieve the structured stack trace. |
| |
| Handle<Object> stack_trace; |
| Handle<Symbol> stack_trace_symbol = isolate->factory()->stack_trace_symbol(); |
| MaybeHandle<Object> maybe_stack_trace = |
| JSObject::GetProperty(holder, stack_trace_symbol); |
| if (!maybe_stack_trace.ToHandle(&stack_trace) || |
| stack_trace->IsUndefined(isolate)) { |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| return; |
| } |
| |
| // Format it, clear the internal structured trace and reconfigure as a data |
| // property. |
| |
| Handle<Object> formatted_stack_trace; |
| if (!ErrorUtils::FormatStackTrace(isolate, holder, stack_trace) |
| .ToHandle(&formatted_stack_trace)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| MaybeHandle<Object> result = ClearInternalStackTrace(isolate, holder); |
| if (result.is_null()) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| // If stack is still an accessor (this could have changed in the meantime |
| // since FormatStackTrace can execute arbitrary JS), replace it with a data |
| // property. |
| Handle<Object> receiver = Utils::OpenHandle(*info.This()); |
| Handle<Name> name = Utils::OpenHandle(*key); |
| if (IsAccessor(receiver, name, holder)) { |
| result = ReplaceAccessorWithDataProperty(isolate, receiver, holder, name, |
| formatted_stack_trace); |
| if (result.is_null()) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| } else { |
| // The stack property has been modified in the meantime. |
| if (!JSObject::GetProperty(holder, name).ToHandle(&formatted_stack_trace)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| } |
| |
| v8::Local<v8::Value> value = Utils::ToLocal(formatted_stack_trace); |
| info.GetReturnValue().Set(value); |
| } |
| |
| void Accessors::ErrorStackSetter( |
| v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSObject> obj = |
| Handle<JSObject>::cast(Utils::OpenHandle(*info.This())); |
| |
| // Clear internal properties to avoid memory leaks. |
| Handle<Symbol> stack_trace_symbol = isolate->factory()->stack_trace_symbol(); |
| if (JSReceiver::HasOwnProperty(obj, stack_trace_symbol).FromMaybe(false)) { |
| ClearInternalStackTrace(isolate, obj); |
| } |
| |
| Accessors::ReconfigureToDataProperty(name, val, info); |
| } |
| |
| Handle<AccessorInfo> Accessors::ErrorStackInfo(Isolate* isolate, |
| PropertyAttributes attributes) { |
| Handle<AccessorInfo> info = |
| MakeAccessor(isolate, isolate->factory()->stack_string(), |
| &ErrorStackGetter, &ErrorStackSetter, attributes); |
| return info; |
| } |
| |
| } // namespace internal |
| } // namespace v8 |